diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 8f547bf..9feb679 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -30338,6 +30338,14 @@ static struct ast_channel *sip_request_call(const char *type, struct ast_format_
 		}
 	}
 
+	if (ast_strlen_zero(tmp)) {
+		*cause = AST_CAUSE_DESTINATION_OUT_OF_ORDER;
+		ast_debug(3, "Cant create SIP call - destination not specified\n");
+		dialog_unlink_all(p);
+		dialog_unref(p, "unref dialog p destination not specified");
+		return NULL;
+	}
+
 	/* Divvy up the items separated by slashes */
 	AST_NONSTANDARD_APP_ARGS(args, tmp, '/');